Creating pages
Links to learn about Shopify Pages
Size chart pages are created using the Shopify Pages editor:

Shopify provides a rich text editor to help you build content pages throughout your site. Story can use these pages that you've built to display the content on your store.

Example size chart page created in the Shopify Pages editor
If you are new to Shopify and building pages, use this link from Shopify Support to learn more:
Last modified 1yr ago